It never ceases to fuckin' amaze me!
An American saying of complete disgust and anger toward a particularly dumbass situation, often accompanied by throwing of hands in the air and/or a wagging of the head side to side.
Johnny Shatt had a particularly quiet night eating cheesy nachos, a large fry, and a chocolate shake with his close friends from art college. His friends thought the night rather uneventful, quiet and uncharacteristically tranquil. Until...Johnny S. thought he could squeeze off a little pressure from inside his baggy white, PGA khaki shorts. Suddenly, the silence was interrupted by a strange pop, pop, pop and one hell of raw sewage shhhhhtink! The only reply by his immediate neighbor, Jacky Sniff with hands held toward the heavens cried woefully: "It never ceases to fuckin' amaze me!" With that, the lads left Johnny at the table, stewing in his now wet (but warm) shhhhtinky-ass shorts in all small town outside Losssss Angeleeeeezzz.